All attachments

Question 1

Proximal - Anterior surface of medial half of clavicle
Anterior surface of sternum, superior six costal cartilages, and aponeurosis of external oblique muscles
Distal - Lateral lip of intertubercular sulcus of humerus

Answer 1

Pectoralis major

Question 2

Proximal - 3rd - 5th ribs near their costal cartilages

Distal - Medial border and superior surface of coracoid process of scapula

Answer 2

Pectoralis minor

Question 3

Proximal - Junction of 1st rib and its costal cartilage

Distal - Inferior surface of middle third of clavicle

Answer 3

Subclavius

Question 4

Proximal - External surfaces of lateral parts of 1st - 8th ribs
Distal - Anterior surface of medial border of scapula

Answer 4

Serratus anterior